The quadratic formula is :
\(x = {-b \pm \sqrt{b^2-4ac} \over 2a}\) b^2 - 4ac is the discriminant
IF discriminant = 0 =====> only one root (double root)
IF discriminat < 0 only imaginary roots
IF discriminat > 0 two roots
+37153 YOU need to work out the ' full answers '
I'll do example one....you do the rest
a = 7 b = - 9 c = 0
discriminant b^2 - 4ac =
(-9)^2 - 4 (7)(0) = 81 this is > 0 there will be two solutions
Now , if you cannot do the others, you are in a math class which is above your level of understanding/knowlwedge and you need some remedial work ...or studying of your class materials.
We are not her to "GIVE" you ANSWERS for the most part....just here to HELP YOU learn the math methods to do it yourself . ~EP
hhelp meeee
